Optimum Array Processing with Variable Linear Constraint

Chang, Byong Kun

doi:10.6109/jicce.2014.12.3.140

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2017

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“…A variety of algorithms were proposed to reduce the signal cancellation phenomena. [2][3][4][5][6][7][8] In this paper, a general linearly constrained adaptive array is proposed to improve the nulling performance. The nulling performance is examined in the array weight vector space.…”

Section: Introductionmentioning

confidence: 99%

General linearly constrained adaptive arrays

Chang¹

2017

The Journal of the Acoustical Society of Korea

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A general linearly constrained adaptive array is proposed to improve the nulling performance. The nulling performance is examined in the array weight vector space. It is shown that the constraint plane is shifted to the origin perpendicularly by the gain factor such that the increase of the gain factor results in the decrease of the distance from the constraint plane to the origin. Thus the variation of the gain factor has an effect on the extent of orthogonality between the weight vector and the steering vectors for the interferences such that the nulling performance of the general linearly constrained adaptive array is improved by the gain factor. It is observed that the proposed adaptive array with an optimum value of the gain factor yields a better nulling performance in coherent signal environment and a similar nulling performance in noncoherent signal environment compared to the conventional linearly constrained adaptive array.

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Section: Introductionmentioning

confidence: 99%